It is impossible for a human to not blink for 20 years. However, if one were to theoretically not blink for that long, the result would be severe and chronic damage to the eyes.
Understanding Blinking
Blinking is an essential reflex that performs several important functions:
- Lubrication: Blinking spreads a tear film across the surface of the eye. This keeps the cornea moist and prevents it from drying out.
- Cleaning: Blinking washes away dust, debris, and other irritants from the eye's surface.
- Protection: Blinking helps to shield the eye from sudden bright lights and physical hazards.
Consequences of Not Blinking
Here's a detailed look at the issues that would arise from not blinking for an extended period like 20 years:
Chronic Dry Eye Syndrome
As cited in the provided reference, prolonged periods of not blinking would lead to chronic dry eye syndrome. The symptoms of this include:
- Discomfort: A constant feeling of unease in the eyes.
- Gritty Sensation: Feeling like there is sand or something foreign in your eyes.
- Burning/Stinging: Sharp, irritating sensations in the eyes.
Other Potential Issues
Beyond chronic dry eye syndrome, additional problems would likely occur:
- Corneal Damage: The cornea, which is the transparent front part of the eye, would become vulnerable to scratches, ulcers, and infections due to continuous dryness.
- Vision Impairment: Scarring and damage to the cornea could result in blurred vision and potentially long-term vision loss.
- Increased Infection Risk: A dry and unprotected eye is more susceptible to bacterial and viral infections, which can further worsen eye health.
Summary
In short, not blinking for 20 years would cause extreme and irreversible damage. You would develop chronic dry eye syndrome, significant corneal damage, vision problems, and be at very high risk of eye infections. Regular blinking is a critical function needed to maintain the health and proper function of the eyes.
